51 lines
1.5 KiB
JavaScript
51 lines
1.5 KiB
JavaScript
var json = typeof JSON !== 'undefined' ? JSON : require('jsonify');
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module.exports = function (obj, opts) {
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if (!opts) opts = {};
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if (typeof opts === 'function') opts = { cmp: opts };
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var cmp = opts.cmp && (function (f) {
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return function (node) {
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return function (a, b) {
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var aobj = { key: a, value: node[a] };
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var bobj = { key: b, value: node[b] };
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return f(aobj, bobj);
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};
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};
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})(opts.cmp);
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return (function stringify (node) {
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if (typeof node !== 'object' || node === null) {
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return json.stringify(node);
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}
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if (isArray(node)) {
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var out = [];
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for (var i = 0; i < node.length; i++) {
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out.push(stringify(node[i]));
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}
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return '[' + out.join(',') + ']';
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}
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else {
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var keys = objectKeys(node).sort(cmp && cmp(node));
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var out = [];
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for (var i = 0; i < keys.length; i++) {
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var key = keys[i];
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out.push(stringify(key) + ':' + stringify(node[key]));
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}
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return '{' + out.join(',') + '}';
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}
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})(obj);
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};
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var isArray = Array.isArray || function (x) {
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return {}.toString.call(x) === '[object Array]';
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};
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var objectKeys = Object.keys || function (obj) {
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var has = Object.prototype.hasOwnProperty || function () { return true };
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var keys = [];
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for (var key in obj) {
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if (has.call(obj, key)) keys.push(key);
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}
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return keys;
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};
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